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@article{AM2_1980__21_182412, author = {Zenon Moszner}, title = {Sur l'\'equation f(x)f(y)f(-x-y) = g(x)g(y)g(-x-y).}, journal = {Aequationes mathematicae}, pages = {20--32}, publisher = {mathdoc}, volume = {21}, year = {1980}, zbl = {0446.39005}, url = {http://geodesic.mathdoc.fr/item/AM2_1980__21_182412/} }
Zenon Moszner. Sur l'équation f(x)f(y)f(-x-y) = g(x)g(y)g(-x-y).. Aequationes mathematicae, Tome 21 (1980), pp. 20-32. http://geodesic.mathdoc.fr/item/AM2_1980__21_182412/